Oasis Black review for XERO Order & Inventory Sync

I installed this app believing that the integration was free because I already pay for both a Shopify subscription AND a Xero Subscription! It's not ok for Xero or Shopify to then start charging more to integrate the two platforms. This is one of the only reasons I choose to go with Shopify in the first place. Not having a free integration between the two platforms, and pricey separate subscription fees, no longer makes Shopify nor xero attractive options.